Home / 15,303.04-21,122.68-9,998.72

Finding the Fourth Proportional to 15,303.04, 21,122.68 and 9,998.72

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Solution

The fourth proportional to 15,303.04, 21,122.68 and 9,998.72 is: 13,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.04 : 21,122.68 = 9,998.72 : x
  2. Step 2: Convert to fraction form
    15,303.04/21,122.68 = 9,998.72/x
  3. Step 3: Cross multiply
    15,303.04x = 21,122.68 × 9,998.72
  4. Step 4: Simplify right side
    15,303.04x = 211,199,762.97
  5. Step 5: Solve for x
    x = 211,199,762.97/15,303.04
  6. Step 6: Final answer
    x = 13,801.16

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.